Prof Barker's Tsolyanu Legions are designed by clan, cult, and cohort. Each legion/levee is uniform, but the larger army is quite diverse. You might consider these things if you develop contentions in the Legion.

For example, the III campaign might have terrible relations with the Cult of the Ancestor Moth, given this was the legion who suppressed the Moth Rebellion against Tiber Septim. Atrebus boasted their tactics were ruthless: judgement heavy and bloodied, so their cultus may be Stendarr. Now days, "Stendarr's Judgement" is wholly comprised of boys newly arrived from Colovia. The III's honor tarnished further by the loss of their eponymous relic, in a battle during the Simulacrum.